Wasc Filling...???

I know I've seen this question answered, but I seem to be "search challanged" today.

What is the BEST filling for a WASC cake?

Backround: I'm making 2 cakes for a babyshower this weekend (each is an 8-inch double-layou cake -- it's for family -- long story...). The first is a chocolate cake with an oreo-filling (mixing crushed oreos with Sugarshack's icing). The second is a WASC cake --- but I dont know what filling to make. I know I can always use plain icing, but I wanted to have something special/good.

I love this recipe from right here on CC...I change it up sometimes using a different flavoured Jello...like raspberry or orange...it is delicious!! (And really easy to make too!)

Strawberries n Cream Mousse (posted by Cakeheart)Ingredients1 large pkg of Instant Vanilla Jello Pudding1 Pint of Heavy Whipping Cream2-3 tablespoons of Strawberry Jello Gelatin Powder (you can add more or less depending on how much strawberry taste you want!) InstructionsMix Heavy whipping cream on med-high. Slowly add all of the contents of the Instant Vanilla pudding and strawberry gelatin powder to whipping cream until it reaches a thick mousse and all of the gelatin and pudding mix is dissolved. Then Refridgerate! (I use this in cupcake and cake fillings!)